[docs] Examples in "13.1. csv — CSV File Reading and Writing" don't close files

[Neil Vass]

Hi,

I have a suggestion for the csv module's documentation. The examples in
http://docs.python.org/library/csv.html show file reading like this:

reader = csv.reader(open("some.csv", "rb"))

This leaves the file handle open after use, without a way to close it. A
better example might be

ifile = open("some.csv", "rb")
reader = csv.reader(ifile)
* ... process file ...*
ifile.close()


Thanks for all your good work,
Neil
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